Merge "Add IHomeTransitionListener to shell." into main (97c7bdff) · Commits · e / os / android_frameworks_base

libs/WindowManager/Shell/src/com/android/wm/shell/transition/HomeTransitionObserver.java

0 → 100644

+119 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.transition;

		import static android.app.WindowConfiguration.ACTIVITY_TYPE_HOME;

		import static com.android.wm.shell.transition.Transitions.TransitionObserver;

		import android.annotation.NonNull;
		import android.app.ActivityManager;
		import android.content.Context;
		import android.os.IBinder;
		import android.view.SurfaceControl;
		import android.window.TransitionInfo;

		import com.android.wm.shell.common.RemoteCallable;
		import com.android.wm.shell.common.ShellExecutor;
		import com.android.wm.shell.common.SingleInstanceRemoteListener;
		import com.android.wm.shell.util.TransitionUtil;

		/**
		* The {@link TransitionObserver} that observes for transitions involving the home
		* activity. It reports transitions to the caller via {@link IHomeTransitionListener}.
		*/
		public class HomeTransitionObserver implements TransitionObserver,
		RemoteCallable<HomeTransitionObserver> {
		private final SingleInstanceRemoteListener<HomeTransitionObserver, IHomeTransitionListener>
		mListener;

		private @NonNull final Context mContext;
		private @NonNull final ShellExecutor mMainExecutor;
		private @NonNull final Transitions mTransitions;

		public HomeTransitionObserver(@NonNull Context context,
		@NonNull ShellExecutor mainExecutor,
		@NonNull Transitions transitions) {
		mContext = context;
		mMainExecutor = mainExecutor;
		mTransitions = transitions;

		mListener = new SingleInstanceRemoteListener<>(this,
		c -> mTransitions.registerObserver(this),
		c -> mTransitions.unregisterObserver(this));

		}

		@Override
		public void onTransitionReady(@NonNull IBinder transition,
		@NonNull TransitionInfo info,
		@NonNull SurfaceControl.Transaction startTransaction,
		@NonNull SurfaceControl.Transaction finishTransaction) {
		for (TransitionInfo.Change change : info.getChanges()) {
		final ActivityManager.RunningTaskInfo taskInfo = change.getTaskInfo();
		if (taskInfo == null \|\| taskInfo.taskId == -1) {
		continue;
		}

		final int mode = change.getMode();
		if (taskInfo.getActivityType() == ACTIVITY_TYPE_HOME
		&& TransitionUtil.isOpenOrCloseMode(mode)) {
		mListener.call(l -> l.onHomeVisibilityChanged(TransitionUtil.isOpeningType(mode)));
		}
		}
		}

		@Override
		public void onTransitionStarting(@NonNull IBinder transition) {}

		@Override
		public void onTransitionMerged(@NonNull IBinder merged,
		@NonNull IBinder playing) {}

		@Override
		public void onTransitionFinished(@NonNull IBinder transition,
		boolean aborted) {}

		/**
		* Sets the home transition listener that receives any transitions resulting in a change of
		*
		*/
		public void setHomeTransitionListener(IHomeTransitionListener listener) {
		if (listener != null) {
		mListener.register(listener);
		} else {
		mListener.unregister();
		}
		}

		@Override
		public Context getContext() {
		return mContext;
		}

		@Override
		public ShellExecutor getRemoteCallExecutor() {
		return mMainExecutor;
		}

		/**
		* Invalidates this controller, preventing future calls to send updates.
		*/
		public void invalidate() {
		mTransitions.unregisterObserver(this);
		}
		}

libs/WindowManager/Shell/src/com/android/wm/shell/transition/IHomeTransitionListener.aidl

0 → 100644

+32 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.wm.shell.transition;

		import android.window.RemoteTransition;
		import android.window.TransitionFilter;

		/**
		* Listener interface that Launcher attaches to SystemUI to get home activity transition callbacks.
		*/
		interface IHomeTransitionListener {

		/**
		* Called when a transition changes the visibility of the home activity.
		*/
		void onHomeVisibilityChanged(in boolean isVisible);
		}

libs/WindowManager/Shell/src/com/android/wm/shell/transition/IShellTransitions.aidl

+5 −0

Original line number	Diff line number	Diff line
		@@ -19,6 +19,8 @@ package com.android.wm.shell.transition;
		import android.window.RemoteTransition;
		import android.window.TransitionFilter;

		import com.android.wm.shell.transition.IHomeTransitionListener;

		/**
		* Interface that is exposed to remote callers to manipulate the transitions feature.
		*/
		@@ -39,4 +41,7 @@ interface IShellTransitions {
		* Retrieves the apply-token used by transactions in Shell
		*/
		IBinder getShellApplyToken() = 3;

		/** Set listener that will receive callbacks about transitions involving home activity */
		oneway void setHomeTransitionListener(in IHomeTransitionListener listener) = 4;
		}

libs/WindowManager/Shell/src/com/android/wm/shell/transition/Transitions.java

+14 −2

Original line number	Diff line number	Diff line
		@@ -356,7 +356,7 @@ public class Transitions implements RemoteCallable<Transitions>,
		}

		private ExternalInterfaceBinder createExternalInterface() {
		return new IShellTransitionsImpl(this);
		return new IShellTransitionsImpl(mContext, getMainExecutor(), this);
		}

		@Override
		@@ -1400,9 +1400,12 @@ public class Transitions implements RemoteCallable<Transitions>,
		private static class IShellTransitionsImpl extends IShellTransitions.Stub
		implements ExternalInterfaceBinder {
		private Transitions mTransitions;
		private final HomeTransitionObserver mHomeTransitionObserver;

		IShellTransitionsImpl(Transitions transitions) {
		IShellTransitionsImpl(Context context, ShellExecutor executor, Transitions transitions) {
		mTransitions = transitions;
		mHomeTransitionObserver = new HomeTransitionObserver(context, executor,
		mTransitions);
		}

		/**
		@@ -1410,6 +1413,7 @@ public class Transitions implements RemoteCallable<Transitions>,
		*/
		@Override
		public void invalidate() {
		mHomeTransitionObserver.invalidate();
		mTransitions = null;
		}

		@@ -1434,6 +1438,14 @@ public class Transitions implements RemoteCallable<Transitions>,
		public IBinder getShellApplyToken() {
		return SurfaceControl.Transaction.getDefaultApplyToken();
		}

		@Override
		public void setHomeTransitionListener(IHomeTransitionListener listener) {
		executeRemoteCallWithTaskPermission(mTransitions, "setHomeTransitionListener",
		(transitions) -> {
		mHomeTransitionObserver.setHomeTransitionListener(listener);
		});
		}
		}

		private class SettingsObserver extends ContentObserver {